Support



Nov. 20, 1 928.

R. G. HAMAKER SUPPORT Filed June 1', 1925 amnion Patented Nov. 20, 1928.

UNITED STATES PATENT OFFICE.

nnx e. HAMAKER, or nousron, TEXAS, ASSIGNOR or ONE-HALF TO A. M. BOWMAN,

or nousron, TEXAS.

sorron'r.

Application filed June 1,

My invention relates to a Samson post con;- struction for use on standard rigs employed in drilling or pumping oilwells.

In the type of Samson post now ordinarily employed on standard rigs, the. post comprises a single upright support which may be braced on its forward and rear sides by ordinary; tie rods. The walking beam is pivoted for oscillation upon the upper end of. said post.

When the Stroke of the walking beam is long, so that the ends of the said beam oscillate through a large arc, the strain upon the post becomes great, and the braces now employed "do not efiectively withstand the same. Asa

result, the post becomes unsteady and does not maintain its proper alignment for very long. V i

It is an object of my invention to provide a walking beam support which will present an effective resistance to the strain exerted thereon by the movement of the beam. It is desired that the structure be strong and simple in construction and readily installed and secured in position.

In the drawing is illustrated the preferred embodiment of the invention, the frame, or

support, being shown in side elevation.

The support which I have devised to take the place of theordinary Samson post comprises two legs 1, which may be of structural steel, preferably of I-beam construction. Said legs are secured together at their upper ends, and are inclined apart at their lower ends, forming an inverted V in shape. The lower ends are securedto plates 2, extending laterally from the said legs and adapted to be secured to a base by means of bolts or screws indicated at? The upper ends of the legs are secured together by plates 4, bolted to the legs. A hearing block 5, which is bolted to the plates 4, has on its upper end a bearing groove to receive the pivot shaft, or trunnion. 6 secured to a block 7 on the lower side of the walking beam 8. The trunnion is held in the hearing by plates 9 on the bearing blockat each side of the walking beam.

The walking beam is rocked on its pivot by the usual pitman 10, secured through a yoke 11 to the beam at its upper end, and to the crank pin 12 at its lower end. Said crank pin is mounted on the crank arm 13, formed on the shaft 14: of the band wheel 15, said shaft bep 1925. Serial No. 34,075,

ing mounted in bearings supportedupon the jack posts 16.

ing rod 17 in two'seotions, the outcrends of which are bolted to the lower ends of the legs at 18 and the adjacent ends of which are secured together by a turnbuckle 19. By means of this turnbuckle the rod actsas a tension member effectively preventing the legs from spreading. The rod, in effect, forms the third s de of a triangular frame making up a structure of great strength, in which the lateral strain inthe direction parallel to the base is sustained by the rod. This make of Samson post 1S particularly adapted to withstand the pull of the walking beam, and although simple in construction, it will serve its pur-. pose for long periods without necessity ofreplacement or repair. The use of this support for the Walking beam forms a combination which has been found to be a material improvement in the art.

What I claim as new and desire to protect by Letters Patent is:

1. A Samson post adapted to support a walking beam comprising a pair of legs of uniform width inclined together at their upper ends and adapted to resist strain in the vertical plane of said walking beam, a supporting plate securing said legs together at their upper ends, means to anchor said legs rigidly to a supporting base, and an adjustable tension member connecting said legs to gether adjacent the lower ends thereof.

2. A walking beam support comprising two legs of uniform width. inclined together at their upper ends, a bearing block thereon, the lower ends of said legs being spaced apart in the plane ,of said walking beam, means to secure the said legs to a supporting base, and a rod connecting said legs adjacent their lower ends, said rod having tension means therein, whereby said legs are reinforced in the direction of the strain thereon.

In testimony whereof I hereunto afiix my signature this 28th day of May, A. D. 1925.

REX e. HAMAKER. 

